roc api documentation

Change-Id: Ic08c83e4e55a450bbd2d2d797e4657871273d174
diff --git a/index.rst b/index.rst
index e390ac0..a4a81ec 100644
--- a/index.rst
+++ b/index.rst
@@ -66,6 +66,7 @@
 
    developer/sdcore
    developer/roc
+   developer/roc-api
 
 .. toctree::
    :maxdepth: 1